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Finding the Fourth Proportional to 285,460.29, 393,929.17 and 156,392.48

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Solution

The fourth proportional to 285,460.29, 393,929.17 and 156,392.48 is: 215,818.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,460.29 : 393,929.17 = 156,392.48 : x
  2. Step 2: Convert to fraction form
    285,460.29/393,929.17 = 156,392.48/x
  3. Step 3: Cross multiply
    285,460.29x = 393,929.17 × 156,392.48
  4. Step 4: Simplify right side
    285,460.29x = 61,607,560,434.48
  5. Step 5: Solve for x
    x = 61,607,560,434.48/285,460.29
  6. Step 6: Final answer
    x = 215,818.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.